How are age-adjusted death rates calculated in WONDER?
The age-adjusted rate is calculated by multiplying the age-specific death rate for each age group by the corresponding weight from the specified standard population, summing across all age groups, and then multiplying this result by 100,000 (or whatever multiplier is specified in the query). Age-Adjusted Death Rate = Sum of (Age Specific Death Rate * Standard Population weight) * 100,000 The age-specific death rate is the number of deaths for a given age group divided by the population of that age group. Age Specific Death Rate = (number of deaths in age group / population of age group) The “standard population weight ” for an age group is calculated by dividing the population for the age group by the sum of the populations for all of the age groups in the query. Please see the question below on “children under 1 year” age categories. Standard Population Weight = population for age group / sum of age group populations for all age groups in query See http://seer.cancer.gov/seerstat/tuto
